A maintenance team rests a 4.0 m ladder horizontally across a narrow support that acts as a pivot. The pivot is 1.2 m from one end of the ladder, and the ladder's weight acts vertically downwards at its midpoint. A retaining strap at the nearer end pulls vertically downwards with a force of 200 N. The team can choose a ladder with a weight of 200 N, 500 N, 240 N or 300 N.